Allergen changeover: pads as a cross-contact surface

Show me a pad and tell me it is not a food contact surface. That was the question a quality manager put to a room of suppliers last spring, and the honest answer is that it depends on the pack. Put a sheet under a skin-packed fillet and it never touches the fish. Put it under a tray of loose portions and it touches everything that runs off them. Either way, the pad sits inside the same changeover zone as the product, and the auditor will treat it that way.

Cross-contact is rarely about the pad itself. It is about the roll, the dispenser, the stack of trays, and the gloves that move between them. Those are the shared surfaces, and they are the ones a changeover has to clear.

The surfaces around the pad, not the pad

Walk a line changeover from a celery and mustard marinade product to a plain beef line. The pad is single use, so it looks after itself. But the roll sits on a bracket above the bench, the dispenser has a lip that product splashes onto, and the spare carton is stored open on a shelf below the table. Any of those can carry a smear from the previous run into the next one.

The carton is the one people miss. A carton of 1,000 sheets is opened at the start of a shift and stays open for days. If it lives on a bench where marinade is being tumbled, the top few sheets take the splash. Nobody sees it because the sheets are white and the marinade is pale.

There is also a storage question that looks trivial until an audit. Sheets kept in an open carton on a low shelf pick up dust, and on a wet floor they pick up more than dust. A sealed carton on a wall bracket at chest height solves both, costs about the price of a knife rack, and removes a finding that reads badly on paper even when nothing has gone wrong.

A twelve-minute changeover sequence

The sequence that holds up in practice is short enough that staff actually do it, which matters more than elegance:

• Close the carton before the last tray of the outgoing run, not after.
• Wipe the dispenser lip and the bracket with the same sanitiser used on the bench.
• Remove the partly used roll and bag it as line waste, even if it is half full.
• Fit a fresh roll from a carton that was stored closed, and record the lot.
• Change gloves after handling the outgoing roll and before touching the new one.

Twelve minutes including the bench wipe. The cost is one part roll per changeover, which is trivial next to the cost of a mislabelled pack.

What belongs in the changeover log

Three fields earn their place. The pad lot fitted at the start of the run, the time the changeover was completed, and the signature of the person who did it. If a retailer asks for a trace later, those three fields answer the question that matters: was the product in this pack made with a pad from a run that had already been cleaned down?

There is a counter-intuitive point here. Lines that change over often tend to be cleaner around the pad than lines that run one product for weeks, because the ritual is practised. The risky line is the one that runs plain chicken for a month and then switches to a crumbed product for a single promotion. Nobody remembers where the roll lives.

If the pad is inside a sealed pack, say so in the changeover record and stop worrying about it. If it is in contact with loose product, treat it as equipment, not packaging. That single reclassification changes what the sanitiser schedule looks like, and it is the version an auditor will accept without argument. More on layer order and pack formats sits in the fresh food absorbent pad guide.